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Pleroma 使用 Cloudflare Worker 搭建代理

Pleroma 使用 Cloudflare Worker 搭建代理

如果没有 Cloudflare 账户的话,可以到 dash.cloudflare.com 注册账户,套餐全部选择 Free 即可。

创建 Worker

进入 Cloudflare 管理界面 ,您会看到:  Cloudflare Panel 点击右下角的这个 Worker 按钮进入 Worker 面板: 点击 Create a Worker,创建 Worker。 Create Worker 此时,如果您点击 Save and Deploy 按钮,您会看到您的代理的域名,您需要记下这个域名。(当然记不得的话,您也可以在很多其它地方重新找到这个域名。) 确认后,您可以点击 Send 按钮,您会看到 200 OK 的响应。

更改 Worker 代码

将左侧的代码编辑窗口的代码全部删除干净,粘贴入下面的代码:

// 你要镜像的网站.
const upstream = 'pleroma.example.com'

const upstream_path = '/'
const upstream_mobile = upstream
const blocked_region = ['KP', 'SY', 'PK', 'CU']
const blocked_ip_address = ['0.0.0.0', '127.0.0.1']
const https = true
const replace_dict = {
    '$upstream': '$custom_domain',
}

addEventListener('fetch', event => {
    event.respondWith(fetchAndApply(event.request));
})

async function fetchAndApply(request) {

    const region = request.headers.get('cf-ipcountry').toUpperCase();
    const ip_address = request.headers.get('cf-connecting-ip');
    const user_agent = request.headers.get('user-agent');

    let response = null;
    let url = new URL(request.url);
    let url_hostname = url.hostname;

    if (https == true) {
        url.protocol = 'https:';
    } else {
        url.protocol = 'http:';
    }

    if (await device_status(user_agent)) {
        var upstream_domain = upstream;
    } else {
        var upstream_domain = upstream_mobile;
    }

    url.host = upstream_domain;
    if (url.pathname == '/') {
        url.pathname = upstream_path;
    } else {
        url.pathname = upstream_path + url.pathname;
    }

    if (blocked_region.includes(region)) {
        response = new Response('Access denied: WorkersProxy is not available in your region yet.', {
            status: 403
        });
    } else if (blocked_ip_address.includes(ip_address)) {
        response = new Response('Access denied: Your IP address is blocked by WorkersProxy.', {
            status: 403
        });
    } else {
        let method = request.method;
        let request_headers = request.headers;
        let new_request_headers = new Headers(request_headers);

        new_request_headers.set('Host', url.hostname);
        new_request_headers.set('Referer', url.hostname);

        let request_body = null;
        if(url.href.includes('/api/v1/media')) {
            request_body = request.body
        } else if(method === 'POST' || method === 'PATCH' || method === 'PUT') {
            request_body = '';
            request_body = await request.text();
            if(request_body) {
                let re = new RegExp(url_hostname, 'g')
                request_body = request_body.replace(re, upstream);
            }
        }

        let original_response = await fetch(url.href, {
            method: method,
            headers: new_request_headers,
            body: request_body
        })

        let original_response_clone = original_response.clone();
        let original_text = null;
        let response_headers = original_response.headers;
        let new_response_headers = new Headers(response_headers);
        let status = original_response.status;

        new_response_headers.set('access-control-allow-origin', '*');
        new_response_headers.set('access-control-allow-credentials', true);
        new_response_headers.delete('content-security-policy');
        new_response_headers.delete('content-security-policy-report-only');
        new_response_headers.delete('clear-site-data');

        const content_type = new_response_headers.get('content-type');
        if (content_type.includes('text/html') && content_type.includes('UTF-8')) {
            original_text = await replace_response_text(original_response_clone, upstream_domain, url_hostname);
        } else {
            original_text = original_response_clone.body
        }

        response = new Response(original_text, {
            status,
            headers: new_response_headers
        })
    }
    return response;
}

async function replace_response_text(response, upstream_domain, host_name) {
    let text = await response.text()

    var i, j;
    for (i in replace_dict) {
        j = replace_dict[i]
        if (i == '$upstream') {
            i = upstream_domain
        } else if (i == '$custom_domain') {
            i = host_name
        }

        if (j == '$upstream') {
            j = upstream_domain
        } else if (j == '$custom_domain') {
            j = host_name
        }

        let re = new RegExp(i, 'g')
        text = text.replace(re, j);
    }
    return text;
}


async function device_status(user_agent_info) {
    var agents = ["Android", "iPhone", "SymbianOS", "Windows Phone", "iPad", "iPod"];
    var flag = true;
    for (var v = 0; v < agents.length; v++) {
        if (user_agent_info.indexOf(agents[v]) > 0) {
            flag = false;
            break;
        }
    }
    return flag;
}

代码改自 https://umrhe.com/cloudflare-workers-to-google.html 。 粘贴完后,把”你要镜像的网站“处的 const upstream = 'pleroma.example.com' 改成

const upstream = '您的Pleroma域名'

改完后点击 Save and Deploy 即可。此时您访问代理域名就可以正常使用 Pleroma 了。

如果认为域名太长太难记,您也可以查询另外绑定域名的教程,此处不详述。

安全提醒

安全提醒
反代这种事情是谁都可以做的,并不需要官方的授权。所以很可能被人用于钓鱼攻击。
使用替代域名登录实例之前,请一定要确认这个替代域名是官方建立的。

引自 影子屋